Question

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Answer 1

Respuesta:

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Explicación paso a paso:

Espera deja saco cuentas

Answer 2

Respuesta:

$3x + y = 820 \\ 2x - y = 340 \\ 5x = 1160 \\ x = 1160 \div 5 \\ x = 232 \\ \\ 3(232) + y =820 \\y = 820 - 696 \\ y = 124$

$4p + 5q = 37 \\ 8p - 5q = - 1 \\ 12p = 36 \\ p = 36 \div 12 \\ p = 3 \\ \\ 4(3) + 5q = 37 \\ 5q = 37 - 12 \\ q = 25 \div 5 \\ q = 5$

$3a - 2b = 0 \\ 4a + b = 55 \\ 3a - 2b = 0 \: (1) \\ 4a + b = 55 \: (2) \\3a - 2b = 0 \\ 8a + 2b = 110 \\ 11a = 110 \\ a = 110 \div 11 \\ a = 10 \\ \\ 3(10) - 2b = 0 \\ 30 - 2b = 0 \\ - 2b = - 30 \\ b = - 30 \div ( - 2) \\ b = 15$